Effects of uniaxial strain on the band structure of boron nitride nanotubes:
a first principles study

Received:
2
October
2008
Accepted:
19
January
2009
Published online:
27
March
2009

Abstract

First principles density functional calculations are used to study the
uniaxial strain effects on the energy band structures of single- and
multi-walled boron nitride nanotubes. Simulation results show that tensile
strain induces a slight decrease in band gaps, while small and large
compressive strains induce slight increases and decreases of band gaps,
respectively. The maximum change of the band gap is ~0.5 eV. The band
structures of all the nanotubes are not sensitive to uniaxial strain, which
means that the boron nitride nanotubes could be used in blue and UV
light-emitting devices under large uniaxial strain.

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